American Thoracic Society Documents 401 Figure 2. Algorithm forinitiating empiric antibi-otic therapy for hospital-acquired pneumonia (HAP),ventilator-associated pneu-monia (VAP), and health-care-associatedpneumonia(HCAP). Figure 2.
One milligram is one thousandth of a gram and one thousand micrograms. A milligram is generally abbreviated as mg. MICROGRAM. One microgram is one millionth of a gram and one thousandth of a milligram. It is usually abbreviated as mcg or ug. Mcg and ug are the same.
1 100 Microgram in Milligram = 0.1 mcg. 2  250 Microgram in Milligram = 0.25 mcg. 3  500 Microgram in Milligram = 0.5 mcg. 4  1,000 Microgram in Milligram = 1. mcg. 5  10,000 Microgram in Milligram = 10.